/////////////////////////////////////////////////////////////////////////////// // Called when applying a point style on a feature geometry. Point styles can // be applied to all feature geometry types. void SE_Renderer::ProcessPoint(SE_ApplyContext* ctx, SE_RenderPointStyle* style, RS_Bounds* bounds) { // the feature geometry we're applying the style on... LineBuffer* featGeom = ctx->geometry; double angleRad = 0.0; if (style->angleControl == SE_AngleControl_FromGeometry) { switch (featGeom->geom_type()) { case GeometryType_LineString: case GeometryType_MultiLineString: case GeometryType_Polygon: case GeometryType_MultiPolygon: { double x0, y0; featGeom->Centroid(LineBuffer::ctLine, &x0, &y0, &angleRad); break; } } } angleRad += style->angleRad; // also account for any viewport rotation angleRad += GetWorldToScreenRotation(); SE_Matrix xform; bool yUp = YPointsUp(); // see StylizationEngine::Stylize for a detailed explanation of these transforms SE_Matrix xformbase; xformbase.translate(style->offset[0], style->offset[1]); xformbase.rotate(yUp? angleRad : -angleRad); xformbase.premultiply(*ctx->xform); // render the points for (int i=0; i<featGeom->point_count(); ++i) { double x, y; featGeom->get_point(i, x, y); // transform to screen space - feature geometry is in [the original] mapping space WorldToScreenPoint(x, y, x, y); xform = xformbase; xform.translate(x, y); if (style->drawLast) AddLabel(featGeom, style, xform, angleRad); else DrawSymbol(style->symbol, xform, angleRad, style->addToExclusionRegion); } if (bounds) { // get the symbol bounds after applying the transforms bounds->minx = bounds->miny = +DBL_MAX; bounds->maxx = bounds->maxy = -DBL_MAX; for (int i=0; i<4; ++i) { RS_F_Point xfpt; xformbase.transform(style->bounds[i].x, style->bounds[i].y, xfpt.x, xfpt.y); bounds->add_point(xfpt); } } }
void PolygonAdapter::Stylize(Renderer* renderer, RS_FeatureReader* features, bool initialPass, SE_Evaluator* eval, LineBuffer* geometry, MdfModel::FeatureTypeStyle* style, const MdfModel::MdfString* tooltip, const MdfModel::MdfString* url, RS_ElevationSettings* elevSettings, CSysTransformer* /*layer2mapxformer*/) { m_eval = eval; // no need to do anything if the style is not an area style, so quit if (FeatureTypeStyleVisitor::DetermineFeatureTypeStyle(style) != FeatureTypeStyleVisitor::ftsArea) return; //------------------------------------------------------- // determine the rule for the feature //------------------------------------------------------- MdfModel::RuleCollection* arc = style->GetRules(); MdfModel::AreaRule* rule = NULL; for (int i=0; i<arc->GetCount(); ++i) { rule = static_cast<MdfModel::AreaRule*>(arc->GetAt(i)); // apply any filter on the rule - if it fails move to the next rule if (!ExecFilter(&rule->GetFilter())) { // don't stylize with failed rule rule = NULL; continue; } break; } if (!rule) return; MdfModel::AreaSymbolization2D* asym = rule->GetSymbolization(); if (asym == NULL) return; //------------------------------------------------------- // evaluate the style to use //------------------------------------------------------- // quick check if style is already cached RS_FillStyle* fillStyle = m_hAreaSymCache[asym]; if (!fillStyle) { // if not, then we need to either cache or evaluate it fillStyle = &m_fillStyle; ObtainStyle(asym, *fillStyle); } //------------------------------------------------------- // compute the clip offset from the styles //------------------------------------------------------- double clipOffsetWU = 0.0; // in mapping units bool bClip = renderer->RequiresClipping(); bool bLabelClip = renderer->RequiresLabelClipping(); if (bClip || bLabelClip) { double mapScale = renderer->GetMapScale(); // in meters in device units double clipOffsetMeters = GetClipOffset(fillStyle->outline(), mapScale); // add one pixel's worth to handle any roundoff clipOffsetMeters += METERS_PER_INCH / renderer->GetDpi(); // limit the offset to something reasonable if (clipOffsetMeters > MAX_CLIPOFFSET_IN_METERS) clipOffsetMeters = MAX_CLIPOFFSET_IN_METERS; // convert to mapping units clipOffsetWU = clipOffsetMeters * mapScale / renderer->GetMetersPerUnit(); } //------------------------------------------------------- // prepare the geometry on which to apply the style //------------------------------------------------------- LineBuffer* lb = geometry; std::auto_ptr<LineBuffer> spClipLB; if (bClip) { // the clip region is the map request extents expanded by the offset RS_Bounds clip = renderer->GetBounds(); clip.minx -= clipOffsetWU; clip.miny -= clipOffsetWU; clip.maxx += clipOffsetWU; clip.maxy += clipOffsetWU; // clip geometry to given extents LineBuffer* lbc = lb->Clip(clip, LineBuffer::ctAGF, m_lbPool); if (lbc != lb) { // if the clipped buffer is NULL (completely clipped) just move on to // the next feature if (!lbc) return; // otherwise continue processing with the clipped buffer lb = lbc; if (lb != geometry) spClipLB.reset(lb); } } //------------------------------------------------------- // do the StartFeature notification //------------------------------------------------------- RS_String tip; //TODO: this should be quick since we are not assigning RS_String eurl; const RS_String &theme = rule->GetLegendLabel(); if (tooltip && !tooltip->empty()) EvalString(*tooltip, tip); if (url && !url->empty()) EvalString(*url, eurl); // elevation settings RS_ElevationType elevType = RS_ElevationType_RelativeToGround; double zOffset = 0.0; double zExtrusion = 0.0; GetElevationParams(elevSettings, zOffset, zExtrusion, elevType); renderer->StartFeature(features, initialPass, tip.empty()? NULL : &tip, eurl.empty()? NULL : &eurl, theme.empty()? NULL : &theme, zOffset, zExtrusion, elevType); //------------------------------------------------------- // apply the style to the geometry using the renderer //------------------------------------------------------- renderer->ProcessPolygon(lb, *fillStyle); //------------------------------------------------------- // do labeling if needed //------------------------------------------------------- MdfModel::Label* label = rule->GetLabel(); if (label && label->GetSymbol()) { // Make sure the geometry is clipped if label clipping is specified. // If bClip is true then the geometry is already clipped. if (!bClip && bLabelClip) { // the clip region is the map request extents expanded by the offset RS_Bounds clip = renderer->GetBounds(); clip.minx -= clipOffsetWU; clip.miny -= clipOffsetWU; clip.maxx += clipOffsetWU; clip.maxy += clipOffsetWU; LineBuffer* lbc = lb->Clip(clip, LineBuffer::ctAGF, m_lbPool); if (lbc != lb) { // if the clipped buffer is NULL (completely clipped) just move on to // the next feature if (!lbc) return; // otherwise continue processing with the clipped buffer lb = lbc; if (lb != geometry) spClipLB.reset(lb); } } double cx = std::numeric_limits<double>::quiet_NaN(); double cy = std::numeric_limits<double>::quiet_NaN(); double dummy; // multi should work for simple polygons too lb->Centroid(LineBuffer::ctArea, &cx, &cy, &dummy); if (!_isnan(cx) && !_isnan(cy)) AddLabel(cx, cy, 0.0, false, label, RS_OverpostType_AllFit, true, renderer, lb); } // free clipped line buffer if the geometry was clipped if (spClipLB.get()) LineBufferPool::FreeLineBuffer(m_lbPool, spClipLB.release()); }
void PolylineAdapter::Stylize(Renderer* renderer, RS_FeatureReader* features, bool initialPass, FdoExpressionEngine* exec, LineBuffer* geometry, MdfModel::FeatureTypeStyle* style, const MdfModel::MdfString* tooltip, const MdfModel::MdfString* url, RS_ElevationSettings* elevSettings, CSysTransformer* /*layer2mapxformer*/) { m_exec = exec; // no need to do anything if the style is not a line style, so quit if (FeatureTypeStyleVisitor::DetermineFeatureTypeStyle(style) != FeatureTypeStyleVisitor::ftsLine) return; //------------------------------------------------------- // determine the rule for the feature //------------------------------------------------------- MdfModel::RuleCollection* lrc = style->GetRules(); MdfModel::LineRule* rule = NULL; for (int i=0; i<lrc->GetCount(); ++i) { rule = static_cast<MdfModel::LineRule*>(lrc->GetAt(i)); // apply any filter on the rule - if it fails move to the next rule if (!ExecFdoFilter(&rule->GetFilter())) { // don't stylize with failed rule rule = NULL; continue; } break; } if (!rule) return; MdfModel::LineSymbolizationCollection* lsymc = rule->GetSymbolizations(); if (lsymc == NULL) return; int nSyms = lsymc->GetCount(); //------------------------------------------------------- // evaluate all the styles once //------------------------------------------------------- // temporary array used to store pointers to each evaluated style RS_LineStroke** ppStrokes = (RS_LineStroke**)alloca(nSyms * sizeof(RS_LineStroke*)); if (!ppStrokes) return; size_t tempIndex = 0; for (int i=0; i<nSyms; ++i) { MdfModel::LineSymbolization2D* lsym = lsymc->GetAt(i); // don't render if there's no symbolization if (lsym == NULL) { ppStrokes[i] = NULL; continue; } // quick check if style is already cached RS_LineStroke* cachedStyle = m_hLineSymCache[lsym]; if (cachedStyle) { ppStrokes[i] = cachedStyle; } else { // if not, then we need to either cache or evaluate it // make sure the vector has a style in the slot we need if (tempIndex >= m_lineSyms.size()) { _ASSERT(tempIndex == m_lineSyms.size()); // allocate a new style and add it to the vector m_lineSyms.push_back(new RS_LineStroke()); } // use the existing style in the vector ppStrokes[i] = m_lineSyms[tempIndex]; ObtainStyle(lsym, *ppStrokes[i]); ++tempIndex; } } //------------------------------------------------------- // compute the clip offset from the styles //------------------------------------------------------- double clipOffsetWU = 0.0; // in mapping units bool bClip = renderer->RequiresClipping(); bool bLabelClip = renderer->RequiresLabelClipping(); if (bClip || bLabelClip) { double mapScale = renderer->GetMapScale(); double clipOffsetMeters = 0.0; // in device units for (int i=0; i<nSyms; ++i) { if (ppStrokes[i]) { double styleClipOffset = GetClipOffset(*ppStrokes[i], mapScale); clipOffsetMeters = rs_max(styleClipOffset, clipOffsetMeters); } } // add one pixel's worth to handle any roundoff clipOffsetMeters += METERS_PER_INCH / renderer->GetDpi(); // limit the offset to something reasonable if (clipOffsetMeters > MAX_CLIPOFFSET_IN_METERS) clipOffsetMeters = MAX_CLIPOFFSET_IN_METERS; // convert to mapping units clipOffsetWU = clipOffsetMeters * mapScale / renderer->GetMetersPerUnit(); } //------------------------------------------------------- // prepare the geometry on which to apply the style //------------------------------------------------------- LineBuffer* lb = geometry; std::auto_ptr<LineBuffer> spClipLB; if (bClip) { // the clip region is the map request extents expanded by the offset RS_Bounds clip = renderer->GetBounds(); clip.minx -= clipOffsetWU; clip.miny -= clipOffsetWU; clip.maxx += clipOffsetWU; clip.maxy += clipOffsetWU; // clip geometry to given extents LineBuffer* lbc = lb->Clip(clip, LineBuffer::ctAGF, m_lbPool); if (lbc != lb) { // if the clipped buffer is NULL (completely clipped) just move on to // the next feature if (!lbc) return; // otherwise continue processing with the clipped buffer lb = lbc; if (lb != geometry) spClipLB.reset(lb); } } //------------------------------------------------------- // do the StartFeature notification //------------------------------------------------------- RS_String tip; //TODO: this should be quick since we are not assigning RS_String eurl; const RS_String &theme = rule->GetLegendLabel(); if (tooltip && !tooltip->empty()) EvalString(*tooltip, tip); if (url && !url->empty()) EvalString(*url, eurl); // elevation settings RS_ElevationType elevType = RS_ElevationType_RelativeToGround; double zOffset = 0.0; double zExtrusion = 0.0; GetElevationParams(elevSettings, zOffset, zExtrusion, elevType); renderer->StartFeature(features, initialPass, tip.empty()? NULL : &tip, eurl.empty()? NULL : &eurl, theme.empty()? NULL : &theme, zOffset, zExtrusion, elevType); //------------------------------------------------------- // apply the style to the geometry using the renderer //------------------------------------------------------- for (int i=0; i<nSyms; ++i) { if (ppStrokes[i]) renderer->ProcessPolyline(lb, *ppStrokes[i]); } //------------------------------------------------------- // do labeling if needed //------------------------------------------------------- MdfModel::Label* label = rule->GetLabel(); if (label && label->GetSymbol()) { // Make sure the geometry is clipped if label clipping is specified. // If bClip is true then the geometry is already clipped. if (!bClip && bLabelClip) { // the clip region is the map request extents expanded by the offset RS_Bounds clip = renderer->GetBounds(); clip.minx -= clipOffsetWU; clip.miny -= clipOffsetWU; clip.maxx += clipOffsetWU; clip.maxy += clipOffsetWU; LineBuffer* lbc = lb->Clip(clip, LineBuffer::ctAGF, m_lbPool); if (lbc != lb) { // if the clipped buffer is NULL (completely clipped) just move on to // the next feature if (!lbc) return; // otherwise continue processing with the clipped buffer lb = lbc; if (lb != geometry) spClipLB.reset(lb); } } double cx = std::numeric_limits<double>::quiet_NaN(); double cy = std::numeric_limits<double>::quiet_NaN(); double slope_rad = 0.0; // multi should work for simple polylines too lb->Centroid(LineBuffer::ctLine, &cx, &cy, &slope_rad); if (!_isnan(cx) && !_isnan(cy)) AddLabel(cx, cy, slope_rad, true, label, RS_OverpostType_AllFit, true, renderer, label->GetSymbol()->IsAdvancedPlacement()? lb : NULL); } // free clipped line buffer if the geometry was clipped if (spClipLB.get()) LineBufferPool::FreeLineBuffer(m_lbPool, spClipLB.release()); }
void SE_PositioningAlgorithms::Default(SE_ApplyContext* applyCtx, SE_RenderStyle* rstyle) { // the style needs to contain at least one primitive SE_RenderPrimitiveList& prims = rstyle->symbol; if (prims.size() == 0) return; SE_Renderer* se_renderer = applyCtx->renderer; LineBuffer* geometry = applyCtx->geometry; SE_Matrix& xform = *applyCtx->xform; double cx = 0.0; double cy = 0.0; double offsetX = 0.0; double offsetY = 0.0; double angleRad = 0.0; switch (rstyle->type) { case SE_RenderStyle_Point: { SE_RenderPointStyle* rpStyle = (SE_RenderPointStyle*)rstyle; // get the feature centroid (no angle for point centroids) geometry->Centroid(LineBuffer::ctPoint, &cx, &cy, NULL); // account for the point usage angle control and offset angleRad = rpStyle->angleRad; offsetX = rpStyle->offset[0]; offsetY = rpStyle->offset[1]; break; } case SE_RenderStyle_Line: { SE_RenderLineStyle* rlStyle = (SE_RenderLineStyle*)rstyle; // get the feature centroid and angle double fAngleRad; geometry->Centroid(LineBuffer::ctLine, &cx, &cy, &fAngleRad); // account for the angle control angleRad = rlStyle->angleRad; if (rlStyle->angleControl == SE_AngleControl_FromGeometry) angleRad += fAngleRad; break; } case SE_RenderStyle_Area: { SE_RenderAreaStyle* raStyle = (SE_RenderAreaStyle*)rstyle; // get the feature centroid (no angle for area centroids) geometry->Centroid(LineBuffer::ctArea, &cx, &cy, NULL); // account for the angle control angleRad = raStyle->angleRad; break; } } // don't add a label if we can't compute the centroid if (_isnan(cx) || _isnan(cy)) return; // need to convert centroid to screen units se_renderer->WorldToScreenPoint(cx, cy, cx, cy); // also account for any viewport rotation angleRad += se_renderer->GetWorldToScreenRotation(); // see StylizationEngine::Stylize for a detailed explanation of these transforms bool yUp = se_renderer->YPointsUp(); SE_Matrix xformLabel; xformLabel.translate(offsetX, offsetY); xformLabel.rotate(yUp? angleRad : -angleRad); xformLabel.premultiply(xform); xformLabel.translate(cx, cy); se_renderer->AddLabel(geometry, rstyle, xformLabel, angleRad); }
void SE_PositioningAlgorithms::EightSurrounding(SE_ApplyContext* applyCtx, SE_RenderStyle* rstyle, double mm2su) { SE_Renderer* se_renderer = applyCtx->renderer; LineBuffer* geometry = applyCtx->geometry; // eight surrounding labeling only applies to point feature geometry switch (geometry->geom_type()) { case GeometryType_Point: case GeometryType_MultiPoint: break; default: return; } // eight surrounding labeling only works with point styles if (rstyle->type != SE_RenderStyle_Point) return; // the style needs to contain at least one primitive SE_RenderPrimitiveList& prims = rstyle->symbol; if (prims.size() == 0) return; SE_RenderPointStyle* rpstyle = (SE_RenderPointStyle*)rstyle; // get actual feature point and transform to screen space // TODO: in the case of a multi-point feature we get the average of all the points; // generating candidate labels around this point doesn't make a whole lot of // sense double cx = 0.0; double cy = 0.0; geometry->Centroid(LineBuffer::ctPoint, &cx, &cy, NULL); // don't add a label if we can't compute the centroid if (_isnan(cx) || _isnan(cy)) return; se_renderer->WorldToScreenPoint(cx, cy, cx, cy); // Get the extent of the last drawn point symbol so that we know how much to offset // the label. This call assumes the symbol draws right before the label. // TODO: remove this assumption const RS_F_Point* cfpts = se_renderer->GetLastSymbolExtent(); RS_F_Point fpts[4]; if(cfpts[0].x == 0 && cfpts[0].y == 0 && cfpts[1].x == 0 && cfpts[1].y == 0 && cfpts[2].x == 0 && cfpts[2].y == 0 && cfpts[3].x == 0 && cfpts[3].y == 0) { for (int i=0; i<4; ++i) { fpts[i].x = cx; fpts[i].y = cy; } } else memcpy(fpts, cfpts, 4*sizeof(RS_F_Point)); double dx = fpts[1].x - fpts[0].x; double dy = fpts[1].y - fpts[0].y; double symbol_rot_rad = atan2(dy, dx); // factor out position and rotation SE_Matrix ixform; ixform.translate(-cx, -cy); // factor out point position ixform.rotate(-symbol_rot_rad); // factor out rotation for (int i=0; i<4; ++i) ixform.transform(fpts[i].x, fpts[i].y); bool yUp = se_renderer->YPointsUp(); if (!yUp) symbol_rot_rad = -symbol_rot_rad; // unrotated bounds RS_Bounds symbol_bounds(fpts[0].x, fpts[0].y, fpts[2].x, fpts[2].y); double symbol_width = symbol_bounds.width(); // symbol width in screen units double symbol_height = symbol_bounds.height(); // symbol height in screen units // offset the label from the symbol's edge double offset = POINT_LABEL_OFFSET_MM * mm2su; // offset in screen units // make sure we have at least one pixel's worth of offset double screenUnitsPerPixel = MILLIMETERS_PER_INCH * se_renderer->GetScreenUnitsPerMillimeterDevice() / se_renderer->GetDpi(); if (offset < screenUnitsPerPixel) offset = screenUnitsPerPixel; // compute how far label needs to be offset from center point of symbol double w2 = 0.5 * symbol_width; double h2 = 0.5 * symbol_height; double ch = 0.0; // vertical center point double cw = 0.0; // horizontal center point w2 += offset; h2 += offset; bool useBounds = symbol_bounds.IsValid(); if (useBounds) { symbol_bounds.maxx += offset; symbol_bounds.maxy += offset; symbol_bounds.minx -= offset; symbol_bounds.miny -= offset; ch = 0.5*(symbol_bounds.maxy + symbol_bounds.miny); cw = 0.5*(symbol_bounds.maxx + symbol_bounds.minx); } // get the viewport rotation double w2sAngleRad = se_renderer->GetWorldToScreenRotation(); // take into account rotation of the symbol - find increased extents // of the symbol bounds due to the rotation double op_pts[16]; if (symbol_rot_rad != 0.0) { double cs = cos(symbol_rot_rad); double sn = sin(symbol_rot_rad); // check to see if the bounds have been set double wcs, nwcs, wsn, nwsn, hsn, nhsn, hcs, nhcs, cwsn, cwcs, chsn, chcs; if (useBounds) { wcs = symbol_bounds.maxx * cs; nwcs = symbol_bounds.minx * cs; wsn = symbol_bounds.maxx * sn; nwsn = symbol_bounds.minx * sn; hsn = symbol_bounds.maxy * sn; nhsn = symbol_bounds.miny * sn; hcs = symbol_bounds.maxy * cs; nhcs = symbol_bounds.miny * cs; } else { wcs = w2 * cs; nwcs = -wcs; wsn = w2 * sn; nwsn = -wsn; hsn = h2 * sn; nhsn = -hsn; hcs = h2 * cs; nhcs = -hcs; } cwsn = cw * sn; chsn = ch * sn; cwcs = cw * cs; chcs = ch * cs; // Find the octant that the symbol is rotated into, and shift the points accordingly. // This way the overpost points are still within 22.5 degrees of an axis-aligned box // (position 0 will always be the closest to Center-Right). // NOTE: The symbol rotation includes the viewport rotation. We want to use the // relative angle between these to compute the quadrant (it's the angle of // the symbol relative to the viewport which matters). double relativeAngle = symbol_rot_rad - w2sAngleRad; double nangle = fmod(relativeAngle * M_180PI, 360.0); if (nangle < 0.0) nangle += 360.0; int i = (((int)((nangle/45.0) + 0.5)) << 1) & 0x0000000f; // i is 2 * the octant op_pts[i++] = wcs - chsn; op_pts[i++] = wsn + chcs; i &= 0x0000000f; // & 15 does (mod 16) op_pts[i++] = wcs - hsn; op_pts[i++] = wsn + hcs; i &= 0x0000000f; op_pts[i++] = cwcs - hsn; op_pts[i++] = cwsn + hcs; i &= 0x0000000f; op_pts[i++] = nwcs - hsn; op_pts[i++] = nwsn + hcs; i &= 0x0000000f; op_pts[i++] = nwcs - chsn; op_pts[i++] = nwsn + chcs; i &= 0x0000000f; op_pts[i++] = nwcs - nhsn; op_pts[i++] = nwsn + nhcs; i &= 0x0000000f; op_pts[i++] = cwcs - nhsn; op_pts[i++] = cwsn + nhcs; i &= 0x0000000f; op_pts[i++] = wcs - nhsn; op_pts[i ] = wsn + nhcs; } else { if (!useBounds) { symbol_bounds.maxx = w2; symbol_bounds.minx = -w2; symbol_bounds.maxy = h2; symbol_bounds.miny = -h2; } op_pts[0 ] = symbol_bounds.maxx; op_pts[1 ] = ch; op_pts[2 ] = symbol_bounds.maxx; op_pts[3 ] = symbol_bounds.maxy; op_pts[4 ] = cw; op_pts[5 ] = symbol_bounds.maxy; op_pts[6 ] = symbol_bounds.minx; op_pts[7 ] = symbol_bounds.maxy; op_pts[8 ] = symbol_bounds.minx; op_pts[9 ] = ch; op_pts[10] = symbol_bounds.minx; op_pts[11] = symbol_bounds.miny; op_pts[12] = cw; op_pts[13] = symbol_bounds.miny; op_pts[14] = symbol_bounds.maxx; op_pts[15] = symbol_bounds.miny; } // check if the incoming point style contains just a single text element bool foundSingleText = false; if (prims.size() == 1) { if (prims[0]->type == SE_RenderPrimitive_Text) foundSingleText = true; } // OK, who says I can't write bad code? Behold: SE_LabelInfo candidates[8]; double yScale = yUp? 1.0 : -1.0; // which way does y go in the renderer? double angleRad = rpstyle->angleRad; // also account for the viewport rotation angleRad += w2sAngleRad; if (foundSingleText) { // In this case we set the appropriate alignments for the single text element // in each candidate label. This allows us to draw the symbol directly at the // candidate points surrounding the feature point. SE_RenderStyle* st0 = se_renderer->CloneRenderStyle(rpstyle); ((SE_RenderText*)st0->symbol[0])->tdef.halign() = RS_HAlignment_Left; ((SE_RenderText*)st0->symbol[0])->tdef.valign() = RS_VAlignment_Half; UpdateStyleBounds(st0, se_renderer); candidates[0].Set(cx + op_pts[ 0], cy + op_pts[ 1]*yScale, RS_Units_Device, angleRad, st0); SE_RenderStyle* st1 = se_renderer->CloneRenderStyle(st0); ((SE_RenderText*)st1->symbol[0])->tdef.valign() = RS_VAlignment_Descent; UpdateStyleBounds(st1, se_renderer); candidates[1].Set(cx + op_pts[ 2], cy + op_pts[ 3]*yScale, RS_Units_Device, angleRad, st1); SE_RenderStyle* st2 = se_renderer->CloneRenderStyle(st1); ((SE_RenderText*)st2->symbol[0])->tdef.halign() = RS_HAlignment_Center; UpdateStyleBounds(st2, se_renderer); candidates[2].Set(cx + op_pts[ 4], cy + op_pts[ 5]*yScale, RS_Units_Device, angleRad, st2); SE_RenderStyle* st3 = se_renderer->CloneRenderStyle(st2); ((SE_RenderText*)st3->symbol[0])->tdef.halign() = RS_HAlignment_Right; UpdateStyleBounds(st3, se_renderer); candidates[3].Set(cx + op_pts[ 6], cy + op_pts[ 7]*yScale, RS_Units_Device, angleRad, st3); SE_RenderStyle* st4 = se_renderer->CloneRenderStyle(st3); ((SE_RenderText*)st4->symbol[0])->tdef.valign() = RS_VAlignment_Half; UpdateStyleBounds(st4, se_renderer); candidates[4].Set(cx + op_pts[ 8], cy + op_pts[ 9]*yScale, RS_Units_Device, angleRad, st4); SE_RenderStyle* st5 = se_renderer->CloneRenderStyle(st4); ((SE_RenderText*)st5->symbol[0])->tdef.valign() = RS_VAlignment_Ascent; UpdateStyleBounds(st5, se_renderer); candidates[5].Set(cx + op_pts[10], cy + op_pts[11]*yScale, RS_Units_Device, angleRad, st5); SE_RenderStyle* st6 = se_renderer->CloneRenderStyle(st5); ((SE_RenderText*)st6->symbol[0])->tdef.halign() = RS_HAlignment_Center; UpdateStyleBounds(st6, se_renderer); candidates[6].Set(cx + op_pts[12], cy + op_pts[13]*yScale, RS_Units_Device, angleRad, st6); SE_RenderStyle* st7 = se_renderer->CloneRenderStyle(st6); ((SE_RenderText*)st7->symbol[0])->tdef.halign() = RS_HAlignment_Left; UpdateStyleBounds(st7, se_renderer); candidates[7].Set(cx + op_pts[14], cy + op_pts[15]*yScale, RS_Units_Device, angleRad, st7); } else { // In the general case we have to account for the label symbol's extents when we // position each candidate. For example, for candidate 1 (top right) we adjust the // position so that the bottom left corner of the label symbol's extent ends up at // the top right candidate point. double labelMinX = rpstyle->bounds[0].x; double labelMinY = rpstyle->bounds[0].y; double labelMaxX = rpstyle->bounds[2].x; double labelMaxY = rpstyle->bounds[2].y; double labelCtrX = 0.5*(labelMinX + labelMaxX); double labelCtrY = 0.5*(labelMinY + labelMaxY); SE_RenderStyle* st0 = se_renderer->CloneRenderStyle(rpstyle); candidates[0].Set(cx + op_pts[ 0] - labelMinX, cy + (op_pts[ 1] - labelCtrY)*yScale, RS_Units_Device, angleRad, st0); SE_RenderStyle* st1 = se_renderer->CloneRenderStyle(st0); candidates[1].Set(cx + op_pts[ 2] - labelMinX, cy + (op_pts[ 3] - labelMinY)*yScale, RS_Units_Device, angleRad, st1); SE_RenderStyle* st2 = se_renderer->CloneRenderStyle(st1); candidates[2].Set(cx + op_pts[ 4] - labelCtrX, cy + (op_pts[ 5] - labelMinY)*yScale, RS_Units_Device, angleRad, st2); SE_RenderStyle* st3 = se_renderer->CloneRenderStyle(st2); candidates[3].Set(cx + op_pts[ 6] - labelMaxX, cy + (op_pts[ 7] - labelMinY)*yScale, RS_Units_Device, angleRad, st3); SE_RenderStyle* st4 = se_renderer->CloneRenderStyle(st3); candidates[4].Set(cx + op_pts[ 8] - labelMaxX, cy + (op_pts[ 9] - labelCtrY)*yScale, RS_Units_Device, angleRad, st4); SE_RenderStyle* st5 = se_renderer->CloneRenderStyle(st4); candidates[5].Set(cx + op_pts[10] - labelMaxX, cy + (op_pts[11] - labelMaxY)*yScale, RS_Units_Device, angleRad, st5); SE_RenderStyle* st6 = se_renderer->CloneRenderStyle(st5); candidates[6].Set(cx + op_pts[12] - labelCtrX, cy + (op_pts[13] - labelMaxY)*yScale, RS_Units_Device, angleRad, st6); SE_RenderStyle* st7 = se_renderer->CloneRenderStyle(st6); candidates[7].Set(cx + op_pts[14] - labelMinX, cy + (op_pts[15] - labelMaxY)*yScale, RS_Units_Device, angleRad, st7); } se_renderer->ProcessSELabelGroup(candidates, 8, RS_OverpostType_FirstFit, true, NULL); }
void PointAdapter::Stylize(Renderer* renderer, RS_FeatureReader* features, bool initialPass, SE_Evaluator* eval, LineBuffer* geometry, MdfModel::FeatureTypeStyle* style, const MdfModel::MdfString* tooltip, const MdfModel::MdfString* url, RS_ElevationSettings* elevSettings, CSysTransformer* /*layer2mapxformer*/) { m_eval = eval; // no need to do anything if the style is not a point style, so quit if (FeatureTypeStyleVisitor::DetermineFeatureTypeStyle(style) != FeatureTypeStyleVisitor::ftsPoint) return; //------------------------------------------------------- // determine the rule for the feature //------------------------------------------------------- MdfModel::RuleCollection* prc = style->GetRules(); MdfModel::PointRule* rule = NULL; for (int i=0; i<prc->GetCount(); ++i) { rule = static_cast<MdfModel::PointRule*>(prc->GetAt(i)); // apply any filter on the rule - if it fails move to the next rule if (!ExecFilter(&rule->GetFilter())) { // don't stylize with failed rule rule = NULL; continue; } break; } if (!rule) return; MdfModel::PointSymbolization2D* psym = rule->GetSymbolization(); MdfModel::PointTypeStyle* pfs = (MdfModel::PointTypeStyle*)style; //------------------------------------------------------- // prepare the geometry on which to apply the style //------------------------------------------------------- // NOTE: clipping of geometry for rendering (the RequiresClipping // option) does not need to be done for points. Points // outside the map extents already get clipped away as part // of the FDO query. LineBuffer* lb = geometry; std::auto_ptr<LineBuffer> spClipLB; if (renderer->RequiresClipping()) { // clip geometry to given extents // NOTE: point styles do not require a clip offset LineBuffer* lbc = lb->Clip(renderer->GetBounds(), LineBuffer::ctAGF, m_lbPool); if (lbc != lb) { // if the clipped buffer is NULL (completely clipped) just move on to // the next feature if (!lbc) return; // otherwise continue processing with the clipped buffer lb = lbc; if (lb != geometry) spClipLB.reset(lb); } } //------------------------------------------------------- // do the StartFeature notification //------------------------------------------------------- RS_String tip; //TODO: this should be quick since we are not assigning RS_String eurl; const RS_String &theme = rule->GetLegendLabel(); if (tooltip && !tooltip->empty()) EvalString(*tooltip, tip); if (url && !url->empty()) EvalString(*url, eurl); // elevation settings RS_ElevationType elevType = RS_ElevationType_RelativeToGround; double zOffset = 0.0; double zExtrusion = 0.0; GetElevationParams(elevSettings, zOffset, zExtrusion, elevType); renderer->StartFeature(features, initialPass, tip.empty()? NULL : &tip, eurl.empty()? NULL : &eurl, theme.empty()? NULL : &theme, zOffset, zExtrusion, elevType); //------------------------------------------------------- // apply the style to the geometry using the renderer //------------------------------------------------------- // Process point symbol, if any. If there is no point symbol, there may // be a label which we will use as a symbol instead. This one does not // obey overposting, it is always there. The marker specified in the rule // is the one that does overposting. double mdefW = 0.01; double mdefH = 0.01; RS_Units mdefU = RS_Units_Device; double mdefRot = 0.0; // the actual position used for the marker by the renderer // may be returned in this structure to help place labels better RS_Bounds bounds = RS_Bounds(1.0, 1.0, 0.0, 0.0); // init invalid if (psym && psym->GetSymbol()) { // quick check if style is already cached RS_MarkerDef* cachedStyle = m_hPointSymCache[psym]; if (cachedStyle) { mdefW = cachedStyle->width(); mdefH = cachedStyle->height(); mdefU = cachedStyle->units(); mdefRot = cachedStyle->rotation(); renderer->ProcessMarker(lb, *cachedStyle, pfs->IsAllowOverpost(), &bounds); } else { RS_MarkerDef mdef; ObtainStyle(psym, mdef); mdefW = mdef.width(); mdefH = mdef.height(); mdefU = mdef.units(); mdefRot = mdef.rotation(); renderer->ProcessMarker(lb, mdef, pfs->IsAllowOverpost(), &bounds); } } //------------------------------------------------------- // do labeling if needed //------------------------------------------------------- MdfModel::Label* label = rule->GetLabel(); if (label && label->GetSymbol()) { // NOTE: clipping of geometry for labeling (the RequiresLabelClipping // option) does not need to be done for points. // TODO: compute label position double cx = std::numeric_limits<double>::quiet_NaN(); double cy = std::numeric_limits<double>::quiet_NaN(); double dummy; // multi should work for simple polygons also lb->Centroid(LineBuffer::ctPoint, &cx, &cy, &dummy); if (!_isnan(cx) && !_isnan(cy)) { // if there was no point symbol, the label is the symbol, // so we send without overposting and at the center point if (!psym || !psym->GetSymbol() || pfs->IsDisplayAsText()) { AddLabel(cx, cy, 0.0, false, label, RS_OverpostType_All, !pfs->IsAllowOverpost(), renderer, lb); } else { MdfModel::TextSymbol* text = label->GetSymbol(); RS_String txt; EvalString(text->GetText(), txt); if (!txt.empty()) { RS_TextDef def; ConvertTextDef(text, def); // if there's a symbol there are 8 possible positions to place the label // around the symbol // NOTE: at this point we know that mdef has been initialized with // whatever was in psym->GetSymbol() and that expressions have // been evaluated double op_pts[16]; // offset the label from the symbol's edge double offset = 0.001 * POINT_LABEL_OFFSET_MM; // in meters if (def.rotation() != 0.0) { // if the text label has rotation put the text at least half the font height // away, so that it doesn't intersect with the marker at the worst-case (45 // degree) rotation. offset += 0.5*def.font().height(); } // in case of mapping space we need to scale by map scale if (mdefU != RS_Units_Device) offset *= renderer->GetMapScale(); // compute how far label needs to be offset from center point of symbol double w = 0.5 * mdefW; double h = 0.5 * mdefH; double ch = 0; // vertical center point double cw = 0; // horizontal center point w += offset; h += offset; bool useBounds = bounds.IsValid(); if (useBounds) { bounds.maxx += offset; bounds.maxy += offset; bounds.minx -= offset; bounds.miny -= offset; ch = 0.5*(bounds.maxy + bounds.miny); cw = 0.5*(bounds.maxx + bounds.minx); } // take into account rotation of the symbol // find increased extents of the symbol bounds due to the rotation if (mdefRot != 0.0) { double rotRad = mdefRot * M_PI180; double cs = cos(rotRad); double sn = sin(rotRad); double wcs, nwcs, wsn, nwsn, hsn, nhsn, hcs, nhcs, cwsn, cwcs, chsn, chcs; // check to see if the bounds have been set if (useBounds) { wcs = bounds.maxx * cs; nwcs = bounds.minx * cs; wsn = bounds.maxx * sn; nwsn = bounds.minx * sn; hsn = bounds.maxy * sn; nhsn = bounds.miny * sn; hcs = bounds.maxy * cs; nhcs = bounds.miny * cs; } else { wcs = w * cs; nwcs = -wcs; wsn = w * sn; nwsn = -wsn; hsn = h * sn; nhsn = -hsn; hcs = h * cs; nhcs = -hcs; } cwsn = cw * sn; chsn = ch * sn; cwcs = cw * cs; chcs = ch * cs; // find the octant that the marker is rotated into, and shift the points accordingly. // this way, the overpost points are still within 22.5 degrees of an axis-aligned box. // (position 0 will always be the closest to Center-Right) double nangle = fmod(mdefRot, 360.0); if (nangle < 0.0) nangle += 360.0; int i = (((int)((nangle/45.0) + 0.5)) << 1) & 0x0000000f; // i is 2 * the octant op_pts[i++] = wcs - chsn; op_pts[i++] = wsn + chcs; i &= 0x0000000f; // & 15 does (mod 16) op_pts[i++] = wcs - hsn; op_pts[i++] = wsn + hcs; i &= 0x0000000f; op_pts[i++] = cwcs - hsn; op_pts[i++] = cwsn + hcs; i &= 0x0000000f; op_pts[i++] = nwcs - hsn; op_pts[i++] = nwsn + hcs; i &= 0x0000000f; op_pts[i++] = nwcs - chsn; op_pts[i++] = nwsn + chcs; i &= 0x0000000f; op_pts[i++] = nwcs - nhsn; op_pts[i++] = nwsn + nhcs; i &= 0x0000000f; op_pts[i++] = cwcs - nhsn; op_pts[i++] = cwsn + nhcs; i &= 0x0000000f; op_pts[i++] = wcs - nhsn; op_pts[i] = wsn + nhcs; } else { if (!useBounds) { bounds.maxx = w; bounds.minx = -w; bounds.maxy = h; bounds.miny = -h; } op_pts[ 0] = bounds.maxx; op_pts[ 1] = ch; op_pts[ 2] = bounds.maxx; op_pts[ 3] = bounds.maxy; op_pts[ 4] = cw; op_pts[ 5] = bounds.maxy; op_pts[ 6] = bounds.minx; op_pts[ 7] = bounds.maxy; op_pts[ 8] = bounds.minx; op_pts[ 9] = ch; op_pts[10] = bounds.minx; op_pts[11] = bounds.miny; op_pts[12] = cw; op_pts[13] = bounds.miny; op_pts[14] = bounds.maxx; op_pts[15] = bounds.miny; } RS_LabelInfo candidates[8]; def.halign() = RS_HAlignment_Left; def.valign() = RS_VAlignment_Half; candidates[0] = RS_LabelInfo(cx, cy, op_pts[0], op_pts[1], mdefU, def); def.valign() = RS_VAlignment_Descent; candidates[1] = RS_LabelInfo(cx, cy, op_pts[2], op_pts[3], mdefU, def); def.halign() = RS_HAlignment_Center; candidates[2] = RS_LabelInfo(cx, cy, op_pts[4], op_pts[5], mdefU, def); def.halign() = RS_HAlignment_Right; candidates[3] = RS_LabelInfo(cx, cy, op_pts[6], op_pts[7], mdefU, def); def.valign() = RS_VAlignment_Half; candidates[4] = RS_LabelInfo(cx, cy, op_pts[8], op_pts[9], mdefU, def); def.valign() = RS_VAlignment_Ascent; candidates[5] = RS_LabelInfo(cx, cy, op_pts[10], op_pts[11], mdefU, def); def.halign() = RS_HAlignment_Center; candidates[6] = RS_LabelInfo(cx, cy, op_pts[12], op_pts[13], mdefU, def); def.halign() = RS_HAlignment_Left; candidates[7] = RS_LabelInfo(cx, cy, op_pts[14], op_pts[15], mdefU, def); renderer->ProcessLabelGroup(candidates, 8, txt, RS_OverpostType_FirstFit, true, lb, text->GetScaleLimit()); } } } } // free clipped line buffer if the geometry was clipped if (spClipLB.get()) LineBufferPool::FreeLineBuffer(m_lbPool, spClipLB.release()); }